A 4-year-old child with frequent colds and coughs and high fevers is usually the result of recurrent upper respiratory tract infections, which can recur frequently because the child’s immunity may be low. Be alert to the possibility of primary immunodeficiency disease. Treatment, if it is caused by bacterial infection, may follow the doctor’s instructions to use amoxicillin clavulanate potassium, azithromycin and other drugs for treatment. In addition, if the child’s temperature does not exceed 38.5 ℃, you can use warm water baths and other ways to reduce fever, if the child’s temperature exceeds 38.5 ℃, you can follow the doctor’s advice to use acetaminophen, ibuprofen to reduce heat treatment. For children with recurrent attacks, we need to be alert to the possibility of primary immunodeficiency disease, can improve the immune full set, lymphocyte count and other related tests, if necessary, improve the whole exon gene test, a clear diagnosis. If the 4-year-old child often cold cough high fever, please go to the regular hospital in time, follow the doctor’s instructions for treatment.